Pressure-regulating device.



No. 790,287. 'y PATENTED MAY 23, 1905.

C. A. CARLSON.

PRESSURE REGULATING DEVICE. APPLICATION FILED JULY 1a,` 1903.

Il I 'Illmuillul MMIIIgl Ulli!! UNITED STATES iatented May 23, 1905.

CHARLES A. CARLSON, OF CHICAGO, ILLINOIS.

PRESSURE-REGULATING DEVICE.

l SPECIFICATION forming part of Letters Patent-No. 790,287, dated May23, 1905.

Application filed July 18, 1903. Serial No. 166,072.

To a/ZZ whom it may concern:

Beit known that I, CHARLES A. CARLSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and usefulImprovements in Pressure-RegulatingDevices, of which the following is a specification;

This invention is primarily intended for use in connection with rotarypressure-tanks for bottle-Iilling machines; and the invention consistsoi" the means employed for introducing compressed air or gas into therotary tank above the liquid while the tank is being rotated, therebyenabling the liquid to be injected into the tank i'rom the bottom whilethe pressure is introduced from above, which arrangementv obviates thenecessity for introducing the pressure and liquid through the l samepipe, as has heretofore been the case.

iiush with the bottom ofthe tank.

The object of the present invention is to prevent foaming of the liquidand at the same time provide means by which the amount of pressure maybe automatically regulated and controlled.

The invention consists in the features of construction and combinationof parts hereinafter described and claimed.

Thexdrawing is a sectional view of a rotary tank with the apparatus ofthe present invention partly in section.

As shown, the pressure-regulating device is applied to a rotary tank Aof any suitable formation. A liquid-supply pipe A extends upwardlythrough the bottom of the tank and is surrounded by a sleeve a,screw-threaded at its upper end and secured in place by means of ascrew-threaded collar c', arranged to lie The sleeve is provided with anannular flange or ledge B, located about midway of the sleeve, whichiiange or ledge abuts against the upper edge of a hollow supporting-postB', mounted upon any suitable support. (Not shown.) This arrangement isone which allows the tank to rotate around the liquid-supply pipe, andthe flange or ledge serves as a bearing or support for the tank duringits revolutionl The present invention, however, does not relate to themethod of constructing or mounting the tank, and the above-describedtank serves merely for purposes of illustration. In the wall of the tankare a series of openings b oit any suitable number adapted to receive aplurality of iilling-valves. (Not shown.) The tank is provided with arounded top or cover C, and between thel tank and cover is a ring c, ofpacking material, for the purpose of rendering the joint air-tight.

In the center of the rounded cover is located the pressure-regulatingdevice which forms the subject of the present invention. The regulatoris formed to have a T-shaped body or casing D, provided with. adownwardlyextending screw-threaded neck d, which neck is screwed throughthe center of the top of the cover and is held in place by means of acollar cl, screw-threaded onto the end of the neck and abutting againstthe inner face of the top or cover. rlhe shell or casing D is providedon its top with'an upwardly-extending inwardly-screw-threaded neck E andis further provided with laterally-extending members e and e', themember e being inwardly screw-threaded, and the member e being providedwith a screw-threaded nipple e2. The shell or casing is provided with atransverselyextending passage F and a vertically-extending passage F',the two passages being in communication with one another at their pointof intersection. Into the upwardly-extending neck is inserted apressure-supply pipe f, which pipe is in alinement with the verticalpassage F, and around the pipe is a screw-I threaded plug f, which plugis screwed down to compress a packing-ring f2, which ring is ittedaround an annular groove f3 in the wall of the pressure-supply pipe. Thelower end of the pressure-supply pipe rests upon a shoulder f", so thatwhen the screw-threaded plug has been screwed down to compress thepacking-ring and force the packing into the annular groove in thepressure-supply pipethe latter will be held in firm contact with theshoulder f4, which serves as a bearing and allows the casing D andmembers attached thereto to be rotated with the rotation of thepressure-tank while the pressure-supply pipe is held in fixed relation.

ySuitably located in the pressure-supply pipe above the shell or casing-is a pressure-regu- IOO i lator Gr of any suitable and well-knownconregulator is a petcock g for regulating the passage of pressurethrough the pipe. The pressure-supply pipe leads to any suitable sourceof pressure and is held in fixed relation to the rotary pressure-tankfor containing liquid.

Into the laterally-extending member c of the shell or easing is inserteda pipe H, carrying a pressure-gage H of any suitable and Well-knownconstruction, and onto the nipple e2 is screw-threaded an automaticpressuredischarge valve I for the purpose of permitting the escape of anexcess of pressure. The valve I consists of a easing I', provided withvent-holes in its walls, and within the casing is arranged a slidablemember 2, provided with vent-holes 3, adapted to coincide with thevent-holes in the valve-casing. A. spring 2'* is arranged within thevalve-casing to abut against the end of the movable valve member andexert pressurethereon, normally holding the member in contact with theend of the nipple, in which position the vent-passages of thevalve-casing and movable member are out of alinement with one another.An excess of pressure, however, within the tank serves to force back themovable member against the pressure of the spring u ntil the vent-holescome into alinement with one another, at which point the excess ofpressure will be allowed to escape until the pressure is reducedsuflieiently to allow the spring to force back the movable member andclose the vent-passages. The spring is regulated by means of athumb-screw 5 in the end of the valve-easing, which arrangement allowsthe pressure of the spring against. the movable member to be increasedor diminished to suit the requirements of the use intended.

The parts com posing the apparatus are arranged to cooperate with oneanother as follows: Pressure is admitted to the pipe f, controlled bythe peteock therein, and the amount of pressure admitted through thepipe is controlled by the pressure-regulator, which may be adjusted toadmit varying degrees-of pressure through the pipe. If, for instance, itis desired to maintain a pressure ot' six pounds within thepressure-tank, the pressure-regulator will be adjusted until the gageshows a pressure of six pounds, after which the discharge-Valve can beregulated so that an excess of pressure above six pounds will bedischarged automatically, thereby maintaining uniformity of pressurewithin the pressuretank. Hitherto pressure has been admitted through theliquor-passage in the bottom of the tank; but the eommingling of liquidand pressure within the liquid-pipe blows the liquid into the tank intoa foamy condition and impairs the quality and quantity of the liquiddrawn oli through the valves. The present arrangement allows of therevolution of the tank and at the same time provides a perfect mechanismfor controlling the admission ol pressure and at the saine time providesa tight joint between the lixed and movable members of thepressure-controlling mechanism.

What I regard as new, and desire to secure by Letters Patent, is-

l. In a pressure-regulating device for use with rotary tanks, thecombination of a shell or casing lixedly attached to the top of therotary tank, a vertically-extending passage through the shell or casingand a transverselyextending passage communicating with the verticalpassage, a stationary pressure-supply pipe entered into the shell oreasing to communicate with the vertical passage therein and allow theshell or casing to revolve around the pressure-supply pipe, and a gageand pressure-discharge valve located at opposite ends of thetransversely-extending passage in the shell or casing, substantially asdescribed.

2. In a pressure-regulating device for use with rotary tanks, thecombination of a shell or casing iixedly attached to the top of therotary tank, a vertically-extending passage through the shell or easingand a transverselyextending passage communicating with the verticalpassage, a stationary pressure-supply pipe entered into the shell oreasing to communicate with the vertical passage therein and allow theshell or easing to revolve around the pressure-supply pipe, a gage andpressure-discharge Valve located at opposite ends of thetransversely-extending passage in the shell or easing, and apressure-regulator in the pressure-supply pipe, substantially asdescribed.

3. In a pressure-regulating device for use with rotary pressure-tanks,the combination of a shell or casing inserted into the top ol thepressure-tank and in line with its axis oi revolution, a pressure-supplypipe externally supported and entered in the shell or casing andprovided with an annular groove around its body, a packing-ring withinthe shell or casing and a screw-threaded plug provided with a smoothinner face surrounding the pressure supply pipe and adapted to bescrewed downwardly within the shell or casing to compress thepacking-ring into the annular groove within the pressure-supply pipe andallow the shell or casing and rotary tank to be revolved around thepressure-supply pipe as an axis, substantially as described.

4. In a pressure-regulating device for use with rotary tanks, thecombination of a shell or casing in the top of the rotary tank and inline with its axis of revolution, a passage through the shell or casing,a contact-shoulder formed by enlarging the diameter o the passage, aninwardly-serew-threaded collar around the shoulder, a pressure-supplypipe IOO adapted to abut against the shoulder in alinement with thepassage and provided with an annular groove around its body, apackingring surrounding lche pressure-supply pipe, a screw-threadedhollow plug provided with a smooth inner face surrounding thepressuresupply pipe and adapted to be screw-threaded into the collar tocompress the packing-ring intoithe annular groove and allow thepressure-supply pipe to serve as an axis for the IO revolution of thepressure-bank and a shell or casing, substantially as described.

CHARLES A. CARLSON. Witnesses:

SAMUEL W. BANNING; OSCAR W. BOND.

